Pre-connection optical cable assembly, pre-formed end optical cable assembly, adapter and construction method

Abstract

The invention relates to a pre-connection optical cable assembly, a pre-forming end optical cable assembly, an adapter and a construction method, and the pre-connection optical cable assembly comprises the pre-forming end optical cable assembly which comprises an optical cable and a connecting piece installed at the end part of the optical cable, and one side, away from the optical cable, of the connecting piece is provided with an insertion core; and the adapter piece comprises a plug and a main body piece sleeved outside the plug, and the preformed end optical cable assembly is used for being inserted into the plug. The prefabricated end optical cable assembly is formed by installing the connecting piece and the inserting core at the end of the optical cable, and the prefabricated end optical cable assembly is used for pipe penetrating construction, so that in the optical cable laying construction process, the size of a pipe penetrating connector in a pipeline is greatly reduced, the adapter is installed after the optical cable is laid, the construction requirement of a pipeline with a smaller pipe diameter can be met, and the construction efficiency is improved. Therefore, the laying density of the optical cable is improved, the construction cost is reduced, even if a small-diameter pipeline is laid originally, construction can be continued, and the problems that the laying density of the optical fiber is reduced and the construction cost is increased are solved.

Description

Technical Field

[0001] The present application relates to the field of optical fiber communication technology, and in particular to a pre-connected optical cable assembly, a pre-terminated optical cable assembly, a transition piece, and a construction method. Background Art

[0002] At present, in the construction of FTTH (Fibre (Fiber) To The Home), most construction parties use factory-prefabricated fiber optic connectors at both ends or one end of the optical cable instead of traditional on-site welding to improve construction efficiency.

[0003] In the related art, the prefabricated fiber optic connectors usually produced by various manufacturers include standard connectors, such as SC connectors, LC connectors, etc., and also include non-standard connectors, such as waterproof fiber optic connectors. However, both standard connectors and non-standard connectors currently have the problem of large connector size. During the pipeline construction process, larger diameter pipelines are required to lay optical cables. This is bound to reduce the density of optical fiber laying, increase construction costs, and face the problem of being unable to construct when encountering a scenario where a small diameter pipeline has already been laid.

[0004] Therefore, it is necessary to design a new pre-connected optical cable assembly to overcome the above problems. Summary of the invention

[0005] The present application provides a pre-connected optical cable assembly, a pre-terminated optical cable assembly, a transition piece and a construction method, which can solve the technical problems in the related art that the density of optical fiber laying is reduced and the construction cost is increased due to the large size of the connector.

[0006] In a first aspect, an embodiment of the present application provides a pre-connected optical cable assembly, comprising: a pre-terminated optical cable assembly, comprising an optical cable and a connector installed at the end of the optical cable, a ferrule being installed on a side of the connector away from the optical cable; an adapter, the adapter comprising a plug and a main body for being sleeved on the outside of the plug, the pre-terminated optical cable assembly being used to be plugged into the plug.

[0007] In combination with the first aspect, in one embodiment, the connector is provided with a limiting slot, the plug core is plugged into the connector and movably engaged with the limiting slot; an elastic element is also sleeved on the outside of the plug core, one end of the elastic element abuts against the plug core, and the other end abuts against the connector.

[0008] In combination with the first aspect, in one implementation, the connector is provided with a groove on the outside, the plug is provided with a first elastic buckle, and the plug is snapped into the groove through the first elastic buckle.

[0009] In combination with the first aspect, in one embodiment, a crimping plane is provided inside the main body, and the crimping plane is used to be crimped to the outside of the first elastic buckle.

[0010] In combination with the first aspect, in one embodiment, the plug is provided with a buckle groove, and a second elastic buckle is provided in the main body, and the second elastic buckle is used to buckle with the buckle groove.

[0011] In combination with the first aspect, in one embodiment, a supporting plane is further provided in the main body, the supporting plane is perpendicular to the axis of the main body, and the plug has a limiting surface, and the limiting surface is used to abut against the supporting plane.

[0012] In combination with the first aspect, in one embodiment, the main body comprises a tail sleeve and a shell, the second elastic buckle and the crimping plane are arranged on the shell, and the tail sleeve is detachably connected to the shell.

[0013] In combination with the first aspect, in one embodiment, the pre-connected optical cable assembly includes a plurality of the adapters, and different adapters have different structures, and the plurality of adapters are used to be selectively installed on the pre-terminated optical cable assembly.

[0014] In a second aspect, an embodiment of the present application provides a pre-terminated optical cable assembly, which includes: an optical cable; a connector, the connector being installed at an end of the optical cable, and a ferrule being installed on a side of the connector away from the optical cable.

[0015] In a third aspect, an embodiment of the present application provides a transition piece, which includes: a plug and a main body, wherein the main body is used to be sleeved outside the plug, and the plug is used to be plugged with the above-mentioned pre-terminated optical cable assembly.

[0016] In a fourth aspect, an embodiment of the present application provides a construction method of the above-mentioned pre-connected optical cable assembly, which comprises the following steps:

[0017] Laying the pre-terminated optical cable assembly in the pipeline so that the pre-terminated optical cable assembly passes through the end of the pipeline;

[0018] Install the adapter to the pre-terminated fiber optic cable assembly.

[0019] In conjunction with the fourth aspect, in one embodiment, the step of installing the adapter to the pre-terminated optical cable assembly includes:

[0020] The main body is sleeved onto the pre-terminated optical cable assembly and placed behind the connector; the plug is then sleeved onto the connector; and the main body is moved toward the plug so that the main body is buckled and fixed with the plug.

[0021] In combination with the fourth aspect, in one embodiment, before the plug is sleeved onto the connector, the method further includes:

[0022] The protective caps sleeved on the connector and the ferrule are removed.

[0023] In combination with the fourth aspect, in one embodiment, the main body comprises a tail sleeve and a shell; and the step of installing the adapter to the pre-terminated optical cable assembly comprises:

[0024] Sleeve the tail sleeve onto the pre-terminated optical cable assembly and place it behind the connector;

[0025] Connecting the plug sleeve to the connecting piece, at which time the plug sleeve is connected to the housing;

[0026] The tail sleeve is moved toward the direction close to the plug so that the tail sleeve is buckled and fixed with the plug.

[0027] In combination with the fourth aspect, in one implementation, the main body includes a tail sleeve and an outer shell; and the construction method further includes:

[0028] When the pre-connected optical cable assembly needs to be disassembled, the tail sleeve is separated from the outer shell and the tail sleeve is placed behind the connector;

[0029] Remove the housing from the plug; then remove the plug from the connector;

[0030] Remove the tail boot from the pre-terminated cable assembly.

[0031] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0032] By installing connectors and ferrules at the end of the optical cable to form a pre-terminated optical cable assembly, and using the pre-terminated optical cable assembly for pipe threading construction, the size of the pipe threading connector in the pipe can be greatly reduced during the optical cable laying construction process. The adapter can be installed after the optical cable laying is completed, which can meet the construction of pipes with smaller diameters, thereby increasing the density of optical cable laying and reducing construction costs. Even if a small-diameter pipe has already been laid, construction can continue, solving the technical problem in related technologies that the large size of connectors causes reduced fiber laying density and increased construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1A schematic diagram of the exploded structure of a pre-connected optical cable assembly provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a partially exploded structure of a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the combined structure of a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0037] Figure 4 An exploded view of a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the structure of a connector provided in an embodiment of the present application;

[0039] Figure 6 A schematic cross-sectional view of a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the exploded structure of the first adapter provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the exploded structure of a second adapter provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of the exploded structure of a third adapter provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of the exploded structure of a fourth adapter provided in an embodiment of the present application;

[0044] Fig.11 A schematic diagram of the structure of a plug provided in an embodiment of the present application;

[0045] Fig.12 Provided for the embodiments of this application Fig.11 A cross-sectional view of the middle plug;

[0046] Fig.13 A cross-sectional view of a plug provided in an embodiment of the present application and a pre-terminated optical cable assembly after being plugged in;

[0047] Fig.14 A cross-sectional view of a main body provided in an embodiment of the present application;

[0048] Fig.15 Provided for the embodiments of this application Fig.14 The main body and Fig.13 A cross-sectional view of a plug connection;

[0049] Fig.16A cross-sectional view of the main body provided in another direction of the embodiment of the present application;

[0050] Fig.17 Provided in the embodiments of this application Fig.16 The main body and Fig.13 A cross-sectional view of a plug connection;

[0051] Fig.18 A schematic diagram of the structure of a pre-terminated optical cable assembly provided in an embodiment of the present application located in a pipeline;

[0052] Fig.19 A schematic diagram of the structure of a pre-terminated optical cable assembly passing through a pipe provided in an embodiment of the present application;

[0053] Fig. 20 A schematic diagram of a main body provided in an embodiment of the present application before being mounted on a pre-terminated optical cable assembly;

[0054] Fig.21 A schematic diagram of the structure after the main body provided in an embodiment of the present application is mounted on a pre-terminated optical cable assembly;

[0055] Fig. 22 Provided in the embodiments of this application Fig.21 Schematic diagram of the structure after removing the protective cap;

[0056] Fig.23 The plug provided in the embodiment of the present application is plugged into Fig. 22 Schematic diagram of the structure;

[0057] Fig.24 A schematic diagram of the exploded structure of a main body provided in an embodiment of the present application;

[0058] Fig.25 A schematic diagram of the structure in which the tail sleeve and the housing are separated according to an embodiment of the present application;

[0059] Fig.26 A schematic diagram of the structure for removing the housing from the plug provided in an embodiment of the present application;

[0060] Fig. 27 A schematic diagram of removing a plug from a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0061] Fig.28 A schematic diagram of removing a tail sleeve from a pre-terminated optical cable assembly provided in an embodiment of the present application;

[0062] Fig.29 Another exploded structural schematic diagram of the fourth adapter provided in the embodiment of the present application;

[0063] Fig.30 A schematic diagram of the structure of another plug provided in an embodiment of the present application;

[0064] Fig.31 Provided in the embodiments of this application Fig.30 A cross-sectional view of the middle plug;

[0065] Fig.32 A schematic diagram of the structure of another tail sleeve provided in an embodiment of the present application;

[0066] Fig.33 Provided in the embodiments of this application Fig.32 A cross-sectional view of the middle tail sleeve;

[0067] Fig.34 Provided in the embodiments of this application Fig.32 Schematic diagram of the middle tail sleeve being plugged into the pre-terminated optical cable assembly;

[0068] Fig.35 Provided in the embodiments of this application Fig.29 A schematic diagram of the plug and housing being plugged into the connector;

[0069] Fig.36 Provided in the embodiments of this application Fig.35 A cross-sectional view of

[0070] Fig.37 A schematic diagram of the structure of the tail sleeve and the plug buckled together provided in the embodiment of the present application;

[0071] Fig.38 Provided in the embodiments of this application Fig.37 sectional view of .

[0072] In the figure:

[0073] 1. Pre-terminated optical cable assembly;

[0074] 11. optical cable; 111. outer sheath; 112. reinforcement member; 113. optical fiber;

[0075] 12. Connector; 121. Groove; 122. Keyway;

[0076] 13. Insert; 14. Elastic element; 15. Protective cap;

[0077] 2. Adapter;

[0078] 21. plug; 211. first elastic buckle; 212. buckle groove; 213. limiting surface;

[0079] 22, main body; 221, crimping plane; 222, second elastic buckle; 223, abutting plane; 224, tail sleeve; 225, housing; 226, clamping part;

[0080] 23. Dust cap;

[0081] 3. Pipeline. DETAILED DESCRIPTION

[0082] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0083] In the related technology, the current connectors are not only large in size, which is not convenient for pipeline construction, but also heavy in weight. Due to the heavier weight and larger size of the connectors, it is impossible to use air blowing to lay pre-terminated optical cables, and construction can only be carried out by traction. Compared with air blowing construction, its construction efficiency is greatly reduced.

[0084] The embodiments of the present application provide a pre-connected optical cable assembly, a pre-terminated optical cable assembly, a transition piece, and a construction method, which can solve the technical problems in the related art that the density of optical fiber laying is reduced and the construction cost is increased due to the large size of the connector.

[0085] See also Figure 1 As shown, a pre-connected optical cable assembly provided in an embodiment of the present application may include: a pre-terminated optical cable assembly 1, which includes an optical cable 11 and a connector 12 installed at the end of the optical cable 11, and a ferrule 13 is installed on the side of the connector 12 away from the optical cable 11; an adapter 2, the adapter 2 includes a plug 21 and a main body 22 for being sleeved outside the plug 21, and the pre-terminated optical cable assembly 1 is used to be plugged into the plug 21.

[0086] In this embodiment, a semi-finished connector can be provided at one or both ends of the optical cable 11. The semi-finished connector includes the above-mentioned connector 12 and the ferrule 13. The semi-finished connector has fewer components and no housing 225, so that the semi-finished connector has a smaller size and lighter weight, so that the pre-terminated optical cable assembly 1 can be laid in a small-diameter pipe 3 by a traction construction method or an air-blowing construction method. After the pre-terminated optical cable assembly 1 in this embodiment is passed through the pipe, the pre-terminated optical cable assembly 1 and the adapter 2 can be fixed together, and the adapter 2 can be disassembled from the pre-terminated optical cable assembly 1 when it is necessary to pass through the pipe. Among them, the pre-terminated optical cable assembly 1 and the adapter 2 can be connected in a detachable manner such as a snap connection or a threaded connection.

[0087] This embodiment forms a pre-terminated optical cable assembly 1 by installing a connector 12 and a ferrule 13 at the end of the optical cable 11. When it is necessary to pass through a pipe, the adapter 2 can be disassembled from the pre-terminated optical cable assembly 1, and the pre-terminated optical cable assembly 1 can be used for the pipe passing construction. The external adapter 2 is omitted, so that during the installation of the optical cable 11, the size and weight of the pipe passing connector in the pipe 3 are greatly reduced. After the installation of the optical cable 11 is completed, the adapter 2 is installed to meet the construction of pipes 3 with smaller diameters, thereby increasing the density of the optical cable 11 installation and reducing the construction cost. Even when encountering a scenario where a small diameter pipe 3 has already been laid, the construction can continue. In addition, after the weight is greatly reduced, the pre-terminated optical cable assembly 1 can be air-blown, which solves the technical problem in the related art that the density of the optical fiber 113 is reduced and the construction cost is increased due to the large size of the connector.

[0088] Preferably, see Figure 2 and Figure 3 As shown, the pre-connected optical cable assembly in this embodiment may further include a protective cap 15. When the pre-terminated optical cable assembly 1 is ready for cable threading, the protective cap 15 may be installed on the connector 12, so that the protective cap 15 may protect the pre-terminated optical cable assembly 1 during the threading process, and a rope threading hole may be provided on the protective cap 15 to facilitate the fixing of the traction rope. After the threading is completed, the protective cap 15 may be removed to expose the connector 12 and fix it to the adapter 2.

[0089] Furthermore, in one embodiment, the connector 12 is provided with a limiting slot, the plug core 13 is plugged into the connector 12 and movably engaged with the limiting slot; an elastic element 14 is also sleeved on the plug core 13, one end of the elastic element 14 abuts against the plug core 13, and the other end abuts against the connector 12. In this embodiment, the connector 12 has an internal through hole, and a limiting slot can be provided on the inner wall of the internal through hole of the connector 12, and the limiting slot extends along the axial direction of the connector 12. A protrusion is provided at the tail end of the plug 13, and the protrusion is inserted into the limiting slot, and the length of the limiting slot along the axial direction of the plug 13 is slightly greater than the length of the protrusion, so that the plug 13 is movably fixed to the connector 12 through the protrusion, and the plug 13 can move forward and backward along the axial direction of the connector 12; at the same time, the elastic element 14 located between the plug 13 and the connector 12 can provide a forward thrust for the plug 13, and the plug 13 can compress the elastic element 14 when it moves backward.

[0090] See also Figure 4 and Figure 6As shown, preferably, the optical cable 11 includes an outer sheath 111 and a reinforcement member 112 and an optical fiber 113 located inside the outer sheath 111. The outer sheath 111 and the reinforcement member 112 are inserted into the connector 12 from the rear end of the connector 12 and fixed to the rear section of the connector 12. The optical fiber 113 passes through the internal through hole of the connector 12 and is fixed in the ferrule 13. In this embodiment, the rear section of the connector 12 may be provided with a glue injection port. After the outer sheath 111 and the reinforcement member 112 are inserted into place in the rear section of the connector 12, glue may be injected into the rear section of the connector 12 to fix the outer sheath 111 and the reinforcement member 112 in the rear section of the connector 12.

[0091] Further, in some embodiments, see Figure 5 and Fig.13 As shown, the connector 12 is provided with a groove 121, and the plug 21 is provided with a first elastic buckle 211, and the plug 21 is engaged with the groove 121 through the first elastic buckle 211. In this embodiment, the groove 121 outside the connector 12 preferably surrounds the outer circumference of the connector 12 to form an annular groove 121, and the plug 21 is symmetrically provided with two first elastic buckles 211 ( Fig.12 As shown in the figure, the pre-terminated optical cable assembly 1 can pass through the interior of the plug 21 and be at least partially located in the plug 21, and the two first elastic buckles 211 can be engaged with the groove 121 to realize the assembly and fixation of the plug 21 and the pre-terminated optical cable assembly 1. This embodiment can realize the detachable connection between the plug 21 and the pre-terminated optical cable assembly 1 through the groove 121 on the connecting member 12 and the first elastic buckle 211 on the plug 21, and the structure is simple, which facilitates the removal of the pre-terminated optical cable assembly 1 from the adapter 2.

[0092] Of course, in other embodiments, two independent grooves 121 may be symmetrically provided outside the connecting member 12 to cooperate with the first elastic buckle 211 .

[0093] See also Figure 5 As shown, a keyway 122 is further provided on the outside of the connector 12. When the connector 12 is inserted into the plug 21, the keyway 122 is aligned with the key inside the plug 21, thereby ensuring that the connector 12 is inserted in a unique direction.

[0094] Based on the above technical solution, see Fig.14 and Fig.15 As shown, in one embodiment, a crimping plane 221 is provided inside the main body 22, and the crimping plane 221 is used to be crimped to the outside of the first elastic buckle 211. In this embodiment, a crimping plane 221 is provided on the inner surface of the main body 22 in contact with the first elastic buckle 211. When the main body 22 is sleeved onto the outside of the plug 21, the crimping plane 221 can press the first elastic buckle 211 to prevent the first elastic buckle 211 from being deformed and disengaged.

[0095] Further, in some optional embodiments, see Fig.16 and Fig.17 As shown, the plug 21 is provided with a buckle groove 212, and a second elastic buckle 222 is provided inside the main body 22, and the second elastic buckle 222 is used to buckle with the buckle groove 212. In this embodiment, a second elastic buckle 222 is provided in another direction inside the main body 22, and two second elastic buckles 222 are preferably provided, and the second elastic buckles 222 and the crimping plane 221 are distributed along the circumferential direction of the main body 22, that is, one crimping plane 221 is provided and then one second elastic buckle 222 is provided, and then one crimping plane 221 is provided and then one second elastic buckle 222 is provided, and the distribution is alternating in this way. In this embodiment, the buckle groove 212 on the plug 21 cooperates with the second elastic buckle 222 on the main body 22, so that the plug 21 and the main body 22 can be detachably connected, and the structure is simple.

[0096] Preferably, see Fig.11 , Fig.16 and Fig.17 As shown, the main body 22 is also provided with a support plane 223, and the support plane 223 is perpendicular to the axis of the main body 22, and the plug 21 has a limiting surface 213, and the limiting surface 213 and the support plane 223 are mutually supported. In this embodiment, the support plane 223 is provided inside the main body 22, and after the plug 21 and the pre-terminated optical cable assembly 1 are installed in the main body 22, the second elastic buckle 222 is engaged with the buckle groove 212 on the side of the plug 21, and the support plane 223 and the limiting surface 213 at the rear end of the plug 21 are mutually supported, and then the second elastic buckle 222 and the support plane 223 provided on the main body 22 can realize the front and rear limit fixation of the plug 21 inside the main body 22. At the same time, the first elastic buckle 211 is pressed in combination with the crimping plane 221 to prevent the first elastic buckle 211 from deforming and disengaging, and further realize the front and rear limit fixation of the pre-terminated optical cable assembly 1 inside the adapter 2.

[0097] In some optional embodiments, see Fig.24 As shown, the main body 22 in the embodiment of the present application can be separated into a tail sleeve 224 and a shell 225, wherein the abutting plane 223 is preferably located on the tail sleeve 224, and the tail sleeve 224 and the shell 225 can form a detachable installation, and after assembly, a complete main body 22 is formed, and Fig.24 A detachable installation method shown is a threaded connection structure. In this embodiment, the crimping plane 221 and the second elastic buckle 222 are arranged on the housing 225.

[0098] See also Fig.29As shown, in some optional embodiments, the main body 22 includes a tail sleeve 224 and a shell 225, and the crimping plane 221 is provided on the tail sleeve 224. In this embodiment, the tail sleeve 224 is provided with a clamping portion 226 ( Fig.32 and Fig.33 As shown), the tail sleeve 224 can be engaged with the buckle groove 212 of the plug 21 through the snap-fit ​​portion 226, so that the tail sleeve 224 is fixed to the plug 21; the shell 225 is used to be sleeved outside the plug 21 and the tail sleeve 224. This embodiment provides another structure of an adapter 2, the main body 22 of the adapter 2 includes a tail sleeve 224 and a shell 225, wherein the structural shape of the shell 225 can be consistent with the shape of the shell 225 of the standard SC connector, so that the pre-terminated optical cable assembly 1 can be connected to the standard SC adapter after the adapter 2 is installed. In this embodiment, the tail sleeve 224 can be installed and fixed to the plug 21 through the snap-fit ​​portion 226, and can be crimped to the first elastic buckle 211 ( Fig.30 and Fig.31 As shown in the figure, since the shell 225 of the standard SC connector is relatively thin, the crimping plane 221 is set on the tail sleeve 224 to provide a larger crimping force; at the same time, the shell 225 in this embodiment can be directly fixed to the plug 21 and sleeved on the plug 21 and at least part of the tail sleeve 224.

[0099] exist Fig.29 In the illustrated embodiment, a front limit boss and a rear limit boss can be provided on the plug 21, and a front limit surface and a rear limit surface can be provided on the shell 225, the front limit boss and the rear limit boss are located between the front limit surface and the rear limit surface, and the distance between the front limit surface and the rear limit surface is greater than the distance between the front end of the front limit boss and the rear end of the rear limit boss, so that the shell 225 can limit the displacement of the plug 21 through the front limit surface and the rear limit surface, and the shell 225 and the plug 21 have space for relative movement in the axial direction.

[0100] See also Figures 7 to 10As shown, in one embodiment, the pre-connected optical cable assembly includes a plurality of adapters 2, and different adapters 2 have different structures, and the plurality of adapters 2 are selectively installed on the pre-terminated optical cable assembly 1. This embodiment provides adapters 2 of multiple structures, each of which includes at least the above-mentioned plug 21 and a main body 22 for sleeved outside the plug 21, and each adapter 2 is provided with the same fixing structure for installation on the pre-terminated optical cable assembly 1, so that no matter which adapter 2 is selected, it can be combined with the same pre-terminated optical cable assembly 1 to form the pre-connected optical cable assembly of the present application; at the same time, this embodiment provides adapters 2 of multiple structures, so that after the pre-terminated optical cable assembly 1 of this embodiment is installed with different adapters 2 according to needs on site, different types of pre-connected optical cable assemblies can be formed to adapt to different types of adapters. Figure 1 A total of four types of adapters 2 are shown, of which three types of adapters 2 have the same plug 21 structure ( Figures 7 to 9 ), the plug 21 of another adapter 2 is not consistent with the plug 21 of the other three adapters 2 ( Fig.10 ), but the plugs 21 of the four types of adapters 2 are all provided with a first elastic buckle 211 and a buckle groove 212, and the structures of the main body 22 of the four types of adapters 2 are different.

[0101] Optionally, the adapter 2 may further include a dust cap 23, which can be detachably mounted to the main body 22 to seal the butt end of the pre-connected optical cable assembly when the pre-connected optical cable assembly is not in use.

[0102] The embodiment of the present application further provides a pre-terminated optical cable assembly 1, which includes: an optical cable 11; a connector 12, the connector 12 being installed at the end of the optical cable 11, and a ferrule 13 being installed on a side of the connector 12 away from the optical cable 11. The pre-terminated optical cable assembly 1 in this embodiment can adopt the pre-terminated optical cable assembly 1 provided in any of the above embodiments and realize the corresponding functions, which will not be repeated here.

[0103] The embodiment of the present application further provides an adapter 2, which includes: a plug 21 and a main body 22, wherein the main body 22 is used to be sleeved outside the plug 21, and the plug 21 is used to be plugged with the above-mentioned pre-terminated optical cable assembly 1. The adapter 2 in this embodiment can adopt the adapter 2 provided in any of the above-mentioned embodiments and realize the corresponding functions, which will not be repeated here.

[0104] The present application also provides a construction method of the above-mentioned pre-connected optical cable assembly, which may include the following steps:

[0105] S1: Lay the pre-terminated optical cable assembly 1 in the pipe 3 so that the pre-terminated optical cable assembly 1 passes through the end of the pipe 3 ( Figure 18 to Figure 19shown).

[0106] S2: Install the adapter 2 to the pre-terminated optical cable assembly 1 ( Figure 20 to Figure 23 shown).

[0107] In this embodiment, in the construction step S1, the pre-terminated optical cable assembly 1 can be laid in the pipeline 3 by air blowing or pulling, and the pre-terminated optical cable assembly 1 is passed out from the other end of the pipeline 3. After passing out, in step S2, the semi-finished connector of the pre-terminated optical cable assembly 1 is assembled with the adapter 2 to form a complete pre-connected optical cable assembly.

[0108] Further, in one embodiment, the step of installing the adapter 2 to the pre-terminated optical cable assembly 1 may include: sleeve the main body 22 onto the pre-terminated optical cable assembly 1 and place it behind the connector 12 ( Figure 20 to Figure 21 Then the plug 21 is sleeved onto the connector 12 ( Fig.23 Then move the main body 22 toward the direction close to the plug 21, so that the main body 22 is fastened and fixed with the plug 21. In this embodiment, see Fig. 20 and Fig.21 As shown, after the pre-terminated optical cable assembly 1 passes through the pipe 3, the main body 22 can be first sleeved onto the pre-terminated optical cable assembly 1 and placed at the rear end of the semi-finished connector to ensure that the semi-finished connector is completely exposed; then the plug 21 is sleeved onto the semi-finished connector to ensure that the first elastic buckle 211 can be snapped into the groove 121; then the main body 22 is moved toward the semi-finished connector until the abutting plane 223 and the limiting surface 213 of the plug 21 abut against each other, at this time, the second elastic buckle 222 is snapped into the buckle groove 212 on the side of the plug 21; and at this time, in another cross-sectional direction, the first elastic buckle 211 is snapped into the groove 121, and the crimping plane 221 presses the first elastic buckle 211 to prevent the first elastic buckle 211 from deforming and disengaging.

[0109] Preferably, for the pre-terminated optical cable assembly 1 with the protective cap 15 sleeved during the pipe threading process, before the plug 21 is sleeved onto the connector 12, the protective cap 15 sleeved on the connector 12 and the ferrule 13 may be removed. Fig. 22 shown.

[0110] See also Fig.29As shown, in an optional embodiment, the main body 22 includes a tail sleeve 224 and an outer shell 225; the adapter 2 is installed to the pre-terminated optical cable assembly 1, including: the tail sleeve 224 is sleeved onto the pre-terminated optical cable assembly 1 and placed behind the connector 12; the plug 21 is then sleeved onto the connector 12, at which time the outer shell 225 is connected to the plug 21; and the tail sleeve 224 is moved toward the direction close to the plug 21, so that the tail sleeve 224 is buckled and fixed to the plug 21.

[0111] In this embodiment, the step of installing the adapter 2 to the pre-terminated optical cable assembly 1 is applicable to Fig.29 In the embodiment shown in FIG. 1 , a clamping portion 226 and a crimping plane 221 are provided on the tail sleeve 224. In this embodiment, the semi-finished connector can be passed through the tail sleeve 224 first, and the tail sleeve 224 is placed behind the semi-finished connector ( Fig.34 When the product leaves the factory, the housing 225 and the plug 21 have been assembled (of course, the housing 225 and the plug 21 may also be separated when leaving the factory), and the plug 21 is partially located inside the housing 225. During on-site construction, the semi-finished connector is inserted into the plug 21, and the first elastic buckle 211 on the plug 21 is buckled with the groove 121 on the connector 12 ( Fig.35 and Fig.36 Finally, the tail sleeve 224 is pulled forward, so that the clamping portion 226 on the tail sleeve 224 is engaged with the buckle groove 212 provided on the outer side of the plug 21, and the crimping plane 221 on the inner surface of the tail sleeve 224 presses the first elastic buckle 211 on the plug 21 ( Fig.37 and Fig.38 The assembly is now complete.

[0112] The construction method of the embodiment of the present application may also include the step of disassembling the pre-connected optical cable assembly: when the pre-connected optical cable assembly needs to be disassembled, the tail sleeve 224 and the outer shell 225 are separated from each other, and the tail sleeve 224 is placed behind the connector 12; then the outer shell 225 is removed from the plug 21; then the plug 21 is removed from the connector 12; and then the tail sleeve 224 is removed from the pre-terminated optical cable assembly 1. In this embodiment, the minimum size of the through hole inside the outer shell 225 is ≥ the maximum size of the outer shape of the plug 21. During the disassembly process, after the tail sleeve 224 is removed, the plug 21 loses the abutting effect of the abutting plane 223, so that the plug 21 can move backward relative to the outer shell.

[0113] See also Fig.25 As shown, during disassembly, the first step is to disassemble the tail sleeve 224 so that the tail sleeve 224 is separated from the shell 225, and the tail sleeve 224 is placed behind the plug 21; the second step is to disassemble the shell 225 and pull the shell 225 forward so that the shell 225 is separated from the plug 21 ( Fig.26 The third step is to remove the plug 21 and pull the plug 21 forward so that the plug 21 and the semi-finished connector are separated ( Fig. 27 The fourth step is to remove the tail sleeve 224 and pull the tail sleeve 224 forward so that the tail sleeve 224 and the semi-finished connector are separated ( Fig.28 As shown), at this time, the semi-finished connector and the adapter 2 are completely disassembled and separated.

[0114] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0115] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0116] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A pre-connected optical cable assembly, characterized in that: It includes: A pre-terminated optical cable assembly (1), comprising an optical cable (11) and a connector (12) installed at the end of the optical cable (11), wherein a ferrule (13) is installed on a side of the connector (12) away from the optical cable (11); The adapter (2) comprises a plug (21) and a main body (22) for being sleeved outside the plug (21); the pre-terminated optical cable assembly (1) is used for being plugged into the plug (21).

2. The pre-connected optical cable assembly according to claim 1, wherein: The connecting piece (12) is provided with a limiting slot, and the insert (13) is plugged into the connecting piece (12) and movably engaged with the limiting slot; An elastic element (14) is also sleeved outside the insert core (13), one end of the elastic element (14) abuts against the insert core (13), and the other end abuts against the connecting piece (12).

3. The pre-connected optical cable assembly according to claim 1, characterized in that: The connector (12) is provided with a groove (121) on the outside, the plug (21) is provided with a first elastic buckle (211), and the plug (21) is snap-fitted to the groove (121) via the first elastic buckle (211).

4. The pre-connected optical cable assembly according to claim 3, characterized in that: A crimping plane (221) is provided inside the main body (22), and the crimping plane (221) is used to be crimped onto the outside of the first elastic buckle (211).

5. The pre-connected optical cable assembly according to claim 4, characterized in that: The plug (21) is provided with a buckle groove (212), and a second elastic buckle (222) is provided inside the main body (22), and the second elastic buckle (222) is used to buckle with the buckle groove (212).

6. The pre-connected optical cable assembly according to claim 5, characterized in that: The main body (22) is also provided with a supporting plane (223), the supporting plane (223) being perpendicular to the axis of the main body (22), and the plug (21) has a limiting surface (213), the limiting surface (213) being used to mutually abut against the supporting plane (223).

7. The pre-connected optical cable assembly according to claim 5, wherein: The main body (22) comprises a tail sleeve (224) and a shell (225), the second elastic buckle (222) and the crimping plane (221) are arranged on the shell (225), and the tail sleeve (224) and the shell (225) are detachably connected.

8. The pre-connectorized optical cable assembly according to claim 1, wherein: The pre-connected optical cable assembly comprises a plurality of adapters (2), and different adapters (2) have different structures. The plurality of adapters (2) are used to be selectively installed on the pre-terminated optical cable assembly (1).

9. A pre-terminated optical cable assembly, characterized in that: It includes: Optical cable (11); A connecting piece (12), the connecting piece (12) being installed at the end of the optical cable (11), and a core (13) being installed on a side of the connecting piece (12) away from the optical cable (11).

10. An adapter, characterized in that: It comprises: a plug (21) and a main body (22), wherein the main body (22) is used to be sleeved outside the plug (21), and the plug (21) is used to be plugged with the pre-terminated optical cable assembly as claimed in claim 9.

11. A construction method for a pre-connected optical cable assembly as claimed in claim 1, characterized in that: It includes the following steps: Laying the pre-terminated optical cable assembly (1) in the pipeline (3) so that the pre-terminated optical cable assembly (1) passes through the end of the pipeline (3); The adapter (2) is installed to the pre-terminated optical cable assembly (1).

12. The construction method according to claim 11, characterized in that: The step of installing the adapter (2) to the pre-terminated optical cable assembly (1) comprises: The main body (22) is sleeved onto the pre-terminated optical cable assembly (1) and placed behind the connector (12); the plug (21) is then sleeved onto the connector (12); and the main body (22) is moved toward the plug (21) so that the main body (22) and the plug (21) are snapped and fixed.

13. The construction method according to claim 12, characterized in that: Before the plug (21) is sleeved onto the connector (12), the method further comprises: The protective cap (15) sleeved on the outside of the connecting piece (12) and the insert (13) is removed.

14. The construction method according to claim 11, characterized in that: The main body (22) comprises a tail sleeve (224) and an outer shell (225); the step of installing the adapter (2) to the pre-terminated optical cable assembly (1) comprises: The tail sleeve (224) is sleeved onto the pre-terminated optical cable assembly (1) and is placed behind the connector (12); The plug (21) is sleeved onto the connecting piece (12), and the outer shell (225) is then sleeved onto the plug (21); The tail sleeve (224) is moved in a direction close to the plug (21) so that the tail sleeve (224) and the plug (21) are buckled and fixed.

15. The construction method according to claim 11, characterized in that: The main body (22) includes a tail sleeve (224) and an outer shell (225); the construction method further includes: When the pre-connected optical cable assembly needs to be disassembled, the tail sleeve (224) and the outer shell (225) are separated from each other, and the tail sleeve (224) is placed behind the connector (12); Remove the housing (225) from the plug (21); then remove the plug (21) from the connector (12); Remove the tail sleeve (224) from the pre-terminated optical cable assembly (1).

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